<template>

  <div class="app-container">

    <h2 style="text-align: center;">发布新课程</h2>

    <el-steps :active="3" process-status="wait" align-center style="margin-bottom: 40px;">
      <el-step title="填写课程基本信息"/>
      <el-step title="创建课程大纲"/>
      <el-step title="发布课程"/>
    </el-steps>

    <div class="ccInfo">
      <img :src="coursePublish.cover">
      <div class="main">
        <h2>{{ coursePublish.title }}</h2>
        <p class="gray"><span>共{{ coursePublish.lessonNum }}课时</span></p>
        <p><span>所属分类：{{ coursePublish.oneSubject }} — {{ coursePublish.twoSubject }}</span></p>
        <p>课程讲师：{{ coursePublish.teacherName }}</p>
        <h3 class="red">￥{{ coursePublish.price }}</h3>
      </div>
    </div>

    <div>
      <el-button @click="previous">返回修改</el-button>
      <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
    </div>
  </div>
</template>

<script>

  import course from "@/api/teach/course";

  export default {
    data() {
      return {
        saveBtnDisabled: false, // 保存按钮是否禁用
        courseId: '',//课程id
        coursePublish: {
          title: '',//课程标题
          cover: '',//课程封面
          lessonNum: 0,//课时数
          oneSubject: '',//一级分类
          twoSubject: '',//二级分类
          teacherName: '',//讲师姓名
          price: 0,//价格
        },//课程确认信息
      }
    },

    created() {
      this.init()
      console.log(this.courseId)
    },

    methods: {
      //初始化
      init() {
        if (this.$route.params && this.$route.params.id) {
          this.courseId = this.$route.params.id
        }
        this.getPublishById()
      },

      //根据课程id查询课程确认信息
      getPublishById() {
        course.getCoursePublish(this.courseId)
          .then(response => {
            //获取返回信息
            this.coursePublish = response.data.coursePublishVo

          })
      },
      //返回修改
      previous() {
        this.$router.push({path: '/teach/course/chapter/' + this.courseId})
      },

      //发布课程
      publish() {
        //调用api接口方法发布课程
        course.publishCourse(this.courseId)
          .then(response => {
            //发布成功
            //提示
            this.$message({
              type: 'success',
              message: response.message
            });
            //跳转到课程列表页面
            this.$router.push({path: '/teach/course/list'});
          })
        .catch(response => {//发布失败
          //提示
          this.$message({
            type: 'error',
            message: response.message
          });
          //回到课程确认页面
          this.$router.push({path:'/teach/course/publish/'+this.courseId})
        })

      }
    }
  }
</script>
<style scoped>
  .ccInfo {
    background: #f5f5f5;
    padding: 20px;
    overflow: hidden;
    border: 1px dashed #DDD;
    margin-bottom: 40px;
    position: relative;
  }

  .ccInfo img {
    background: #d6d6d6;
    width: 500px;
    height: 278px;
    display: block;
    float: left;
    border: none;
  }

  .ccInfo .main {
    margin-left: 520px;
  }

  .ccInfo .main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    line-height: 1;
    font-weight: normal;
  }

  .ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
  }

  .ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
  }

  .ccInfo .main h3 {
    left: 540px;
    bottom: 20px;
    line-height: 1;
    font-size: 28px;
    color: #d32f24;
    font-weight: normal;
    position: absolute;
  }
</style>
